Public bug reported:
GDM 49~beta implements a userdb VarLink service for managing the unix users
running the greeter shell, as well as the gnome-initial-setup users.
Currently it is broken because apparmor prevents access to it.
gdm-launch-environment][1892]: Gdm: GdmSessionWorker: determining if
authenticated user (password required:0) is authorized to session
unix_chkpwd[1897]: could not obtain user info (gdm-greeter)
kernel: audit: type=1400 audit(1754399331.488:211): apparmor="DENIED"
operation="connect" class="file" profile="unix-chkpwd"
name="/run/systemd/userdb/org.gnome.DisplayManager" pid=1897 comm="unix_chkpwd"
requested_mask="wr" denied_mask="wr" fsuid=0 ouid=0
gdm-launch-environment][1892]: Gdm: GdmSessionWorker: user is not authorized to
log in: Authentication failure
** Affects: apparmor (Ubuntu)
Importance: Undecided
Assignee: Alessandro Astone (aleasto)
Status: In Progress
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: Confirmed
** Also affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: apparmor (Ubuntu)
Status: New => In Progress
** Changed in: gdm3 (Ubuntu)
Status: New => Confirmed
** Changed in: apparmor (Ubuntu)
Assignee: (unassigned) => Alessandro Astone (aleasto)
** Changed in: apparmor (Ubuntu)
Milestone: None => ubuntu-25.10
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https://bugs.launchpad.net/bugs/2119541
Title:
nss-systemd does not grant access to the GDM user database
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